​

let index = 0;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(0);

  fill(255);

  textSize(32);

  text(words[index], 12, 200);

}

​

function mousePressed() {

  index++;

  //when you click to the end of the array, go back to the start

  if (index == words.length) {

    index = 0;

  }

}